3 years ago

Plz helppppp!! For 25 points!!

Chemistry

1 answer:

VashaNatasha [74]3 years ago

7 0

Answer:

ption C

Explanation:

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The element californium (cf) sells for $1000 per µg. assuming 6.02 x 1023 atoms of cf have a mass of 251 grams, how many atoms o

saveliy_v [14]

Answer:- $2.40*10^1^0atoms$

Solution:- It is a simple unit conversion problem. We could solve this using dimensional analysis.

We know that, 1 US dollar = 100 cents

1 cent = 1 US penny

So, 1 US dollar = 100 US pennies

$1g=10^6\mu g$

Let's make the set up starting with 1 penny as:

$1penny(\frac{$1}{100pennies})(\frac{1\mu g}{$1000})(\frac{1g}{10^6\mu g})(\frac{6.02*10^2^3atoms}{251g})$

= $2.40*10^1^0atoms$

Therefore, we can bye $2.40*10^1^0atoms$ of Cf in one US penny.

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3 years ago

What is the molecular formula of the compound

Ipatiy [6.2K]

Molecular formula: C10H15Cl5

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3 years ago

Which of the following changes will decrease the rate of collisions between gaseous molecules oftype A and B in a closed contain

Leni [432]

D - take away B molecules

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3 years ago

Which objects cannot be observed in detail without a microscope?

Sonbull [250]

The objects which cannot be observed in detail without a microscope

include the following:

Red blood cell

Bacterium

<h3>What is a Microscope?</h3>

A microscope is an instrument which is used to view smaller objects such as

microbe,cells, tissues etc. This instrument is used in viewing the different

cells found in the body as they can't be seen with the eye.

The remaining options which can be seen with the eyes don't require

the use of microscopes.

Read more about Microscope here brainly.com/question/25268499

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2 years ago

Atoms that have a positive or negative electrical charge are called ________.

hjlf

Explanation:

They are called or known as cations

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